Work-holding device for boring-machines.



Patented May I3, I902.

McCLINTOCK Youma.

(Applicatiux; filed Nov. 26, 1901.)

WORK HOLDING DEVICE FOR BORING MACHINES.

(No Model.)

with lease;

No. 700,000. I

(Application filed Nov. 20, 1001-.

4 Sheets-Shut 2.

(No Model.)

wi/kmwa mm a W 0 n4; NORRIS ravens co. mo'muma, wnsumm'ou, nJc.

No. 700,000. Patented May 13, I902.

. McCLlNTOCK YOUNG.

WOBKHOLDING DEVICE FOR BORING MACHINES.

(Application f lled Nov. 26, I901.) v (No Model.) 4- Shets-Sheet 3.

THE cams PIEIERS co. vnmwuma. WASHINGTON, u: c.

No. 700,000. Patented May I3, I902.

' MOCLINTUCKYUUNG.

WORK HOLDING DEVICE FOR BORING- MACHINES.

(Application filed Nov. 26, 1901. (N0 Medal.) 4 Sheets-Sheet mm 3 mm, oooooaoooooo o o d od M I 0 g QN M H UNITED STATES PATENT OFFICE MOGLINTOCK YOUNG, OF FREDERIOKEJIARYLAND, Ass cNO TO PALMETTO FIBRE COMPANY, A CORPORATION OF MARYLAND.

YIIVYVORK-HOLDING Device? FOR BORING-MACHINES.

SPECIFIGATION forming part Of Letters Patent NO. 700,000, dated May 13, 1902.

Application filed November 26, 1901. $erial No. 83,778. (No model.)

To aZZ whom it may concern:

Be itknown that I, MOO INTOOK YOUNG, of,

holding device, and is designed more particularly for holding brush-blocks to be bored and presenting them to the boring-tool in various positions, to the end that the holes will extend at difierent angles with respect to the face of the block.

The device constituting my invention isv susceptible of various adjustmentsin orde'r to vary the positions and angularity of the; holes in the block, so that'it is adapted tol handle blocks of varying forms and sizes and to present them to the borer so that the holes may be varied in position and inclination are I cording'tothe character or brush it is desired;

to produce.

The invention consists also in means for adjusting the device for straight work,

Where the 'holes will extend at right angles to the face of the block.

The invention consists also in the details of construction and combination of parts hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a side elevation of my device, showing the work-holding table inclined in one direction with respect to the boring-tool. Fig. 2 is a top plan view showing the table inclined in a difierent direction. Fig. 3 is a front elevation with the-borer removed, showingthe parts adjusted for straightwork. Fig.4: is a diagrammatic view showing how the device may be manipulated for boring holes in the edge of the blocks. gage device for the borer.

Referring to the drawings, 1 represents a frame comprising a platform 2, sustained by legs 3, in which is mounted a horizontal shaft 4, adapted to receive power from any suitable source and provided on one end with a Fig. 5 is a view of thepulley 5. The pulley is connected by a belt 6 with a small pulley 7 on a horizontal shaft 8, mounted in bearings in a standard 9, rising from the platform at one end of the .machine. This shaftis continued beyond the inner bearing and is 'inth'e form of a shank or stem 10, which is fitted with a drill 11 for boring the holes in the block. The platform is provided with parallel'longitudinal tracks '12, on which travels aicarriage 13, to which is pivoted on a vertical axis or pivot 14 a frame 15, which may be swung horizontally for the purpose presently described. The frame carries a horizontal frame or superstructure 16,to which is pivoted on a horizontal transverse axis 17 a table 18, on which the brush-blocks are held while being bored. From this construction it will beseen that the block onthe table maybe moved transverselyof'the toollintwo directionsviz.,

vertically in the are of a circle on the axis 17 as a center and horizontally in the arc of a t 1 circle onthe axis 14: as a centerwhereby the The invention consists also inineanjs for: adjusting the parts of the device so that the; edge of the block carried by the holder may; be presented to the action of the borer.

Holes bored will incline outward from the center of the block.

The carriage 13 consists of two axles 19, on

' which are mounted wheels 20, adapted to travel on the tracks before alluded to, and

these axles are connected together rigidly by two parallel bars 2l,'one arranged above the other and spaced'and held apart by posts 22.

At frequent intervals along the bars holes 23 are formed, which register with each other and; are adapted to receive the pivot 14,which is in the form of a removable pin. This pin projects above the upper bar and is formed to enter either of a series of holes 2-1 in two parallel bars 25, arranged one above the other and constituting the frame 15, before alluded to. By this construction the axis of' the frame 15 may be changed to vary the curve in which the table swings in a horizontal line, which will in turn vary the angle of, the holes. I

The bars of the carriage and the'fram'e ,15

extend beyond or in front of the plane of the table 18, and they are formed at this point to receive the removable pivot-pin, so that when pivoted at this point the table may be swung around horizontally and the edge of the block presented to the tool,'as shown in Fig. 4, so that holes may be bored along the edge.

The frame 16, on which the table is directly pivoted, is rectangular in form and sustained above frame 15 by a vertical standard 26 at the rear end and an inwardly-inclined standard 27 at its front end, the purpose of the latter being to permit the table to be swung downward and rearward on its horizontal axis. The side bars of the rectangular frame are provided at frequent intervals with holes 28, by means of which the table is adj ustably pivoted to the frame on a horizontal axis, the table being provided for this purpose with two rearwardly-projecting arms 29,extending along the sides of the frame and formed with a series of holes to receive the pivoting-pin. These pins are threaded near their inner ends to screw into the holes in the side bars of the frame, and adjacent to their threaded ends they are enlarged to fit snugly in the holes in the two arms, so that they constitute pivots on which the table may rock vertically. By changing the pins from one hole to another the curve in which the table moves may be varied to change the angles of the holes.

A counterweight 30 is applied to one of the arms of the table to resist the weight of the table and block, so that the parts maybe ma nipulated with ease and freedom. This device is in the form of a weight 31, mounted adjustably on a rod 32, pivoted at its inner end to arm 29 on a horizontal axis 33. This rod is adapted to be adjusted on its axis to vary the effect of the weight on the table, and it is held in the position adjusted by means of a binding-screw 8%, carried by the rod and extending through a curved slot 35 in a plate applied to the arm. By this means the weight may be adjusted according to the point at which the table is pivoted to the rectangular frame in order to properly counterbalance the same in its various positions.

In order to present the block to the borer so that the holes will be straight and at right angles to the face of the same, I provide means for locking the frame 15 to the carriage in line with the movement of the carriage, and also means for locking the table-arms to the rectangular frame to hold the table in a truly vertical plane. I efiectthe locking of frame 15 by a pin 36, which may be inserted downwardly through the holes in the bars of the frame and those in the bars on the carriage. The table 18 may be locked in a vertical position by means of a locking-screw 37, which is inserted in one of the holes in arm 29 and screwed into a hole in the rectangular frame. By this means the table may be held in a vertical plane at right angles to the axis of the drill, and the block on the table may be presented to the drill by moving the carriage up to the same.

In the operation of the machine the attendant stands facing the table and grasps the latter in order to move it to and from the drill and manipulate the same on its axes to bring difierent points in its surface to be bored. It is desirable and preferable to mark on the block the positions the holes are to occupy, and in certain classes of work, more particularly where the holes are to be inclined, the block may be secured on the table by fastening-strips 38, bolted to the table and engaging the edges of the block. For this purpose and in order to provide for fastening blocks of different sizes the table is provided with holes throughout its surface to receive the bolts for fastening the strips in place. In other kinds of work, where, for instance, the holes are to be bored straight, with the two frames looked, as described, it will be necessary to shift the block on the table to bring the proper points in position to be drilled.

In boring holes in the edge of the block the pivot-pin 14 is adjusted adjacent to or in front of the plane of the table, according to the thickness of the block, and the frame 15 is swung around at right angles to the drill, which will bring the block in line with the drill and present its edge to the same. In this position the holes in one edge can be bored by shifting the block up or down, after which the block may be turned to present the other edges. It is seen, therefore, that by reason of the various adjustments described the machine is well adapted to present the blocks in many positions for work of various kinds, either straight work or where the bristles in the brush are to be inclined or flare or where the holes are to be bored in the edges of the block.

In order to shield the rollers on the carriage and the tracks from the drillings when the drill is in operation, I extend over the tracks, at a point adjacent to the drill, horizontal plates 40, which are fixed to bracket-arms ex tending upward and inward from the outer sides of the platform 2. These plates are high enough above the tracks to permit the front rollers on the carriage to pass thereunder when the carriage is moved up to the drill, and in addition to serving as ashield for the tracks and wheels of the carriage they act to prevent the latter from lifting off the tracks, and they serve as platforms or tables on which the brush-blocks may be placed for convenience.

In order that the holes bored in the blocks maybe of uniform depth, notwithstanding the angle at which the block is presented to the drill, I provide the latter with a gage-stop 41 in the form of a collar surrounding the drill, with its outer end of a conical shape and sloping outward from the outer surface of the drill, as shown at 41, Fig. 5. The conical end of this collar enables the drill to enter to substantially the same depth whether the block is presented at right angles to the drill or at an inclination with respect to the same, for in the latter case the sloping sides of the collar permit the hole formed in theblock to wholly surround the exposed active end of the drill.

I provide for the adjustment of the gage to vary the depth of the holes by securing the collar to the drill by means of a screw 42,

tapped through the collar and engaging the drill. 7

Having thus described my invention, wha I claim is- 1. In combination with a borer, a carriage movable to and from the same, a work-holding table, a frame sustaining said table and extending in front of the same, a pivotal connection between said frame and carriage, and means for adjusting said pivotal connection along the frame from a point in rear of the table to a point in front of the same.

2. In combination with a borer, a carriage movable to and from the same, a work-hold ing table, a frame sustaining the same, and a pivotal connection between the frame and carriage adapted to be located in advance of the plane of the table.

3. In combination with a borer, a blockholding table mounted on an axis located with reference to the table to permit the latter to be swung around and present the edge of the block to the action of the borer.

4. In combination with'a horizontal-borer, a carriage movable to and from the same, a frame pivoted to said carriage on a vertical axis, a work-holding table sustained by said frame in rear of its axis'and movable on a horizontal transverse axis.

5. In combination with a borer, a carriage movable to and from the same and formed with a series of vertical holes, a pivot-pin adapted to be removably seated in said holes, a frame provided with a series of holes adapted to receive the upper end of the pin, and a work-holding table sustained by said frame.

' G. In combination with a horizontal borer, a carriage movableto and from the same, a frame 15 mounted on the carriage below the level of the borer on-a vertical axis, a superstructure fixed to the frame at or near. the level of the borer, and a work-holding table mounted on the superstructure on a transverse horizontal'axis,'in such position that the face of the table will be in rear of the axis of the frame 15; whereby the table may be swung around on the axis of the frame 15 to present the edge of the block to the borer, and may be swung vertically on its horizon tal transverse axis relative to the superstructure without interference with the frame 15.

7. In combination with a horizontal borer, a frame, a work-holding table mounted on the frame on a horizontal transverse axis, means for adjusting the axis of the table to and from the face of the same, a counterweight connected with the table, and means for adjusting the counterweightwith relation to the table to and from its axis.

8. In combination with a borer, a frame, a work-holding table, arms extending rearwardly from the same and pivoted to the frame on a transverse axis,'means for adj usting-the'axial connection of the arms, a rod 32 pivoted to oneof the arms on a horizontal transverse axis, means for adjusting the pivoted rod in its path of movement on its axis, and a weight carried by the rod.

9. In combination with a main frame, guides or tracks thereon, a vertical standard at one end of the frame, ahorizontal borer mounted in the standard and overhanging the tracks at one end, a carriage provided with front wheels adapted to travel on the tracks and movable to and from the borer, a table on the carriage arranged to present the block to the borer when the carriage is moved up to the same, and horizontal plates fixed to the main frame and extending abovethe tracks below the borer, said plates being so positioned with relation to the tracks as to closely overlie the front wheels of the carriage whenthe latter is moved up to present the block to the borer; whereby the plates serve the threefold functions of supports for the blank blocks to be bored; shields to prevent the drillings from gaining access to the tracks and wheels of the carriage, and stops to preventthe carriage from accidentally lifting from the track.

10. In a machine of the type described the combination with a drill, of means for pre senting a block at an inclination to the same, and a gage device fixed to the drill and'hav itg its end beveled to permit the drill to en ter the inclined block. I

11.' In a machine'of the type described the combination with a drill, of means for presenting'the block to the same, and a gage'device on the drill having a conical end.

12. In a machine of the type described, the combination with a drill, of means for presenting the block to be bored to the same, and

agage device on the drill formed with a con ical end, andadjustable alongthe drill.

In testimony whereof I hereunto set my hand, this 13th day of November, 1901, in the presence of two attesting witnesses.

' MCOLINTOOK YOUNG.

Witnesses:

MARSHALL Four, EDWIN O. MARKELL. 

